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THE SPECIFIC GOALS OF OUR WORK HENCE ARE AS FOLLOWS: 1. TO DEVELOP NEW ROCK MAGNETIC AND PALEOMAGNETIC TESTS AIDED BY ELECTRON MICROSCOPY TO ASSESS THE MAGNETIC RECORDING FIDELITY OF METEORITES IN LIGHT OF CORE DYNAMO NEBULAR AND SOLAR WIND MAGNETIZATION MECHANISMS; 2. TO APPLY THESE NEW METHODS TO CARBONACEOUS CHONDRITES TO DETERMINE IF THEIR MAGNETIZATIONS INDICATE INTERNAL (CORE DYNAMO) OR EXTERNAL (SOLAR WIND) MAGNETIZATION PROCESSES; 3. TO APPLY THESE METHODS TO OTHER ACHONDRITES FORMED IN NEAR SURFACE ENVIRONMENTS TO BUILD A DATA SET WITH WHICH THE CARBONACEOUS CHONDRITES CAN BE COMPARED; 4. TO DEVELOP THE THEORETICAL BASIS OF SOLAR WIND AND NEBULAR MAGNETIZATIONS SUPPORTED BY NUMERICAL SIMULATIONS; 5. TO USE THE RESULTS OF THEORY AND SIMULATIONS CONSTRAINTS PROVIDED BY RADIOMETRIC AGE DATA AND OUR NEW MAGNETIC DATA TO PROVIDE CONSTRAINTS ON THE TIME OF DUST AND GAS CLEARING IN THE PROTO-PLANETARY DISK AND ON THE ORBITAL DISTANCE OF METEORITE PARENT BODIES WHEN THEY WERE MAGNETIZED. WE HOPE TO TEST OUR WORKING HYPOTHESIS THAT THE CV AND CM PARENT BODIES HAD ALREADY BEEN SCATTERED TO THE LOCATION OF THE PRESENT-DAY ASTEROID BELT BY JUPITER BY THE TIME OF THEIR AQUEOUS ALTERATION WHERE THEY WERE MAGNETIZED BY THE YOUNG SOLAR WIND.

$498,582FY2020National Aeronautics and Space AdministrationNASA

University Of Rochester, Rochester NY

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